Leap Therapeutics Inc. announced the final results from Part B of the DeFianCe study, a Phase 2 clinical trial evaluating sirexatamab (DKN-01), an anti-DKK1 monoclonal antibody, in combination with bevacizumab and chemotherapy for patients with microsatellite stable $(MSS)$ colorectal cancer who have received one prior systemic therapy for advanced disease. The final data were presented at the European Society for Medical Oncology (ESMO) Congress 2025. In the DKK1-high patient population, the objective response rate $(ORR)$ was 38.0% in the Sirexatamab Arm compared to 23.7% in the control arm. Leap Therapeutics plans to continue supporting the development of sirexatamab in DKK1-high colorectal cancer patients and to engage with regulatory authorities regarding its potential registrational path.